hyaluronic acid

noun

hy·​al·​uron·​ic acid ˌhī(-ə)l-yu̇-ˈrä-nik 

: a viscous glycosaminoglycan chiefly of the matrix of tissues that occurs especially in the vitreous humor, umbilical cord, synovial fluid, and loose connective tissue and serves especially as a structural element and lubricant

Examples of hyaluronic acid in a Sentence

Recent Examples on the Web

Ones formulated with hydrating ingredients like hyaluronic acid can help boost hydration in the skin along with reducing the appearance of fine lines and wrinkles, says Erica Marie Gatt, an aesthetician and founder of EM Skin Studio. —Jenny McCoy, Glamour, 25 Sep. 2024

Dark circles are also tackled via its potent blend of skin-care ingredients: hyaluronic acid, peptides, coffee leaf extract, plus licorice and gentian root which come together to brighten, depuff, hydrate, and soothe all skin types with consistent use. —Kiana Murden, Vogue, 24 Sep. 2024

One of the other main ingredients is hyaluronic acid (HA). —Anna Tingley, Variety, 24 Sep. 2024

The ingredients were hyaluronic acid, vitamin E and mango oils. —Celeste Polanco, Essence, 24 Sep. 2024

Word History

Etymology

International Scientific Vocabulary

First Known Use

1934, in the meaning defined above

Medical Definition

hyaluronic acid

noun

hy·​al·​uron·​ic acid ˌhīl-yu̇-ˌrän-ik-  ˌhī-əl-yu̇- 

: a viscous glycosaminoglycan that occurs especially in the vitreous body, the umbilical cord, and synovial fluid and as a cementing substance in the subcutaneous tissue